What problem does it solve? Turning a functional specification into a concrete frontend build plan is error-prone when done ad hoc: files get missed, routes and i18n namespaces are inconsistent, and spec changes force full rebuilds. This Skill analyzes a spec (or gathers requirements interactively) and produces a structured implementation plan for production React code. ## Core Features & Use Cases - Spec-driven planning: Reads the planning-plugin specification, UI DSL manifest, and prototypes to produce a plan.json covering types, API services, stores, components, pages, routes, i18n, MSW mocks, and tests across six TDD phases. - Standalone mode: When no spec exists, gathers entities, screens, and language interactively and generates a minimal spec plus plan. - Incremental delta planning: Detects spec changes against an existing plan and generates a delta-plan.json so only affected files are regenerated, with a large-delta warning when full regeneration is safer. - Use Case: After finalizing a hotel-booking spec with the planning plugin, run this Skill to get a file-by-file React implementation plan, then hand it to fe-gen for TDD code generation. ## Quick Start Run /frontend-react-plugin:fe-plan booking-flow to generate an implementation plan for the booking-flow feature from its functional specification.